Without being rude or condescending, you can't really judge a dress size that well just by looking at someone.
There's a huge range of body types who can fit into the same dress size (due to height, body composition, fat distribution etc) and women's dress size varies wildly from store to store due to vanity sizing and the way the clothes are cut.
Your comments were really upsetting to Sophia, she tried to take it well by uploading a photo showing an old pic versus a new pic which was really honest I think (how many girls are willing to upload a photo of their weight gain?!) and she's been accused of lying
I would be surprised if she feels able to see you again because how can she feel confident and sexy in front of someone who has made these comments :/ she feels really upset over what's been said, especially as she uploads new photos nearly every day so she's never tried to hide what her body looks like.
She's not fat, and she's also a young woman with feelings and insecurities like the rest of us and this has destroyed her confidence - but she has a business to run and she's an honest girl who's not intending to mislead anyone, so new full length photos will be going up today
judge off those rather than the label on her clothes x